|Publication number||US4920365 A|
|Application number||US 07/336,775|
|Publication date||Apr 24, 1990|
|Filing date||Apr 12, 1989|
|Priority date||Apr 25, 1988|
|Also published as||DE8816402U1, EP0341443A1|
|Publication number||07336775, 336775, US 4920365 A, US 4920365A, US-A-4920365, US4920365 A, US4920365A|
|Inventors||Juergen Marx, Artur Weich|
|Original Assignee||Siemens Aktiengesellschaft|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Non-Patent Citations (6), Referenced by (24), Classifications (12), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The invention relates to an electronic digital timepiece and, more particularly to a timepiece having a display for the digital display of the actual time-of-day and other possible data. The display includes means for indicating whether the display is showing standard or daylight saving time, i.e., the "time complex".
Prior art timepieces generally have had the problem of requiring a complicated adjustment procedure to change over from the time complex for daylight-saving time to that for standard time. To simplify this procedure, an electronic digital clock, as shown from the EP-A-0 197 336, has a separate selector button by which the hour display can be adjusted by ±one hour. However, there is no indication whether the time displayed is for daylight-saving time or for standard time. Each time the selector button is pressed, the hour display is alternately switched ahead or back by one hour. A problem develops if the button is pressed twice by mistake. This has the effect of switching the display back to the original time complex. The use of separate luminous markings to display the currently selected time complex poses a problem as the timepieces usually only have very small displays and therefore cannot accommodate such an additional making.
The present invention provides a timepiece having a display marking for the time complexes designated daylight-saving time and standard time. The display marking is closely associated with the timepiece display and does not utilize any additional space on the display.
A further advantage of the present invention ensures that the time-of-day can only be entered on the display, if the selected time complex (daylight-saving time/standard time) has been entered first. Thus, the entered time is clearly assigned to one of the time complexes. Yet another advantage of the present invention is that the timepiece, by use of the display features, prevents confusion between the actual time of day and the entered switching times when the timepiece is used as a timer switch.
The FIGURE illustrates a timepiece display in accordance with the present invention.
Referring to the FIGURE, there is shown a panel 1 of an electronic digital clock containing an operating element 2 and a display 3. It is apparent that the FIGURE illustrates only one example of a clock panel and that another design may be used without departing from the principles of the invention. The actual time-of-day "12:43" appears on this display in a standard seven segment display form. A colon 4, 5 is located between the hours and minutes display. On the upper edge of the display 3, luminous indicators are provided for each of the days-of-the-week, as indicated by the abbreviations (SU-SA) on the cover plate 1. The operating element 2 contains four buttons designated in sequence as: "SO/WI" for the switching from daylight-saving time to standard time; "DAY" for the cyclical switching to each of the days-of-the-week; "HOUR" for switching the hour display; and "MINUTE" for switching the minute display. Each of the points 4, 5 of the colon between the hour and minute display is encircled by a symbol designated by 6 for standard time and 7 for daylight-saving time. Both symbols can be alternately controlled by the SO/WI-button and, when activated, are constantly lighted. Further, a cpu 8 is shown coupled to the timepiece for use when the timepiece operates as a timer switch.
In the operation and initialization or setting of the display, the operator starts from an initial state attained by simultaneously pressing both the "HOUR" and "MINUTE" buttons. This has the effect of bringing the day-of-the-week display to Sunday SU and the hour and minute display to zero "00:00". At this point, the symbols for standard time 6 and for daylight saving time 5 flash on and off. The selected symbol (6 or 7) is then constantly lighted while the symbol, which is not selected, goes out. During the time period that one of the symbols is constantly lighted, the colon flashes. At this point in the procedure, the actual day-of-the-week can be adjusted with the "DAY" button, and the hours and minutes of the actual time-of-day can be adjusted with the hours "HOUR" and minutes "MINUTE" buttons. By repeatedly activating the SO/WI button, the operator can switch from daylight saving time to standard time and back again. Thereby, with each activation, the respective symbol 6 or 7 lights up and the hour display is changed by ±1 hour. The design of the circuitry necessary to perform the functions of the timepiece is well known to those of ordinary skill in the art.
Furthermore, the timepiece of the present invention can be used as a timer switch clock. The purpose of timer clocks is to connect and disconnect electrically controllable apparatuses, e.g., space heating systems, at given pre-set times. The electronic timer switch has the advantage of expanded use over mechanical timer switches. For example, the time-dependent connecting and disconnecting at different times on individual weekdays is more easily accomplished. It is thus possible to store a timer program for connecting and disconnecting on each individual weekday or a group of weekdays and to access it on the individual weekdays. The timer switch uses one additional button (not shown) to assign the appropriate times-of-day and days-of-the-week to the desired switching on or off points. For purpose of the timer switch, then, an additional button must be arranged in a well-known manner, so that when it is pressed, the colon lights up statically. Also, the days, hours and minutes can be adjusted appropriately with the corresponding buttons, as provided above. After a certain elapsed time from when the adjustment procedure for the switching times has been completed, or by selecting an additional button, one can switch back to the "actual time of the day".
The time-of-day and day-of-the-week can also be adjusted with a single button. Using the single button, i.e., by pressing the button, the operator first selects the display of the minutes, and, after the minutes flash, the hour display. After the hour display flashes, the day-of-the-week is then selected. Then, the button is held down again, until the minutes finish flashing and the respective hour appears on the display, whereby the operator presses the button again to adjust the minutes. As stated above, the design of the circuitry to perform these functions is well known to those of ordinary skill in the art.
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|US6229765 *||Mar 11, 1999||May 8, 2001||Rm-Ic Telepathy Ltd.||Electronic sunrise-dependent timepiece|
|US7369462||Sep 27, 2005||May 6, 2008||Quartex, Division Of Primex, Inc.||Wireless synchronous time system with solar powered transceiver|
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|US7411869||Nov 2, 2004||Aug 12, 2008||Quartex, Division Of Primex, Inc.||Wireless synchronous time system|
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|US20060058926 *||Sep 27, 2005||Mar 16, 2006||Quartex, A Division Of Primex, Inc.||Wireless synchronous time system with solar powered transceiver|
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|US20080198698 *||Apr 4, 2008||Aug 21, 2008||Pikula Michael A||Wireless synchronous time system|
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|US20080212413 *||Apr 4, 2008||Sep 4, 2008||Pikula Michael A||Wireless synchronous time system|
|US20080316870 *||Aug 27, 2008||Dec 25, 2008||Pikula Michael A||Wireless synchronous time system|
|EP1571508A1 *||Mar 1, 2004||Sep 7, 2005||Duteck Industrial Co., Ltd.||Method of displaying world time with automatic correction of daylight saving time in a movement|
|U.S. Classification||368/242, 968/977, 368/31, 368/187, 368/34, 968/938|
|International Classification||G04G9/00, G04G15/00|
|Cooperative Classification||G04G9/0076, G04G15/006|
|European Classification||G04G15/00C, G04G9/00G|
|Apr 12, 1989||AS||Assignment|
Owner name: SIEMENS AKTIENGESELLSCHAFT, MUNCHEN, GERMANY, A CO
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:MARX, JUERGEN;WEICH, ARTUR;REEL/FRAME:005062/0668
Effective date: 19890404
|Apr 24, 1994||LAPS||Lapse for failure to pay maintenance fees|
|Jul 5, 1994||FP||Expired due to failure to pay maintenance fee|
Effective date: 19940705